Always interesting to read your articles @grwd. Unfortunately the RAC reporting for Bitcoin Utopia on free-dc.org is still incorrect and seriously affect the charts above.

Based on a different page, Bitcoin Utopia has a project RAC of 3,329,259,851 with zero credits added in the last 28 days. It is also interesting to compare the RAC vs FDC RAC in the team tables. Try to check the latest status on Bitcoin Utopia: http://www.bitcoinutopia.net/bitcoinutopia/

Can I suggest to take this page (http://stats.free-dc.org/stats.php?page=boincteamsb) instead for the next update. Looking forward to read your next one.